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- /* See LICENSE file for copyright and license details. */
- #include <ctype.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include <X11/Xatom.h>
- #include <X11/Xlib.h>
- #include <X11/Xutil.h>
- #ifdef XINERAMA
- #include <X11/extensions/Xinerama.h>
- #endif
- #include <draw.h>
-
- #define INRECT(x,y,rx,ry,rw,rh) ((x) >= (rx) && (x) < (rx)+(rw) && (y) >= (ry) && (y) < (ry)+(rh))
- #define MIN(a,b) ((a) < (b) ? (a) : (b))
- #define MAX(a,b) ((a) > (b) ? (a) : (b))
- #define UTF8_CODEPOINT(c) (((c) & 0xc0) != 0x80)
-
- typedef struct Item Item;
- struct Item {
- char *text;
- Item *next; /* traverses all items */
- Item *left, *right; /* traverses matching items */
- };
-
- static void appenditem(Item *item, Item **list, Item **last);
- static void calcoffsetsh(void);
- static void calcoffsetsv(void);
- static char *cistrstr(const char *s, const char *sub);
- static void drawmenu(void);
- static void drawmenuh(void);
- static void drawmenuv(void);
- static void grabkeyboard(void);
- static void insert(const char *s, ssize_t n);
- static void keypress(XKeyEvent *e);
- static void match(void);
- static void paste(void);
- static void readstdin(void);
- static void run(void);
- static void setup(void);
- static void usage(void);
-
- static char text[4096];
- static size_t cursor = 0;
- static const char *prompt = NULL;
- static const char *normbgcolor = "#cccccc";
- static const char *normfgcolor = "#000000";
- static const char *selbgcolor = "#0066ff";
- static const char *selfgcolor = "#ffffff";
- static unsigned int inputw = 0;
- static unsigned int lines = 0;
- static unsigned int mw, mh;
- static unsigned int promptw;
- static unsigned long normcol[ColLast];
- static unsigned long selcol[ColLast];
- static Atom utf8;
- static Bool topbar = True;
- static DC *dc;
- static Item *allitems, *matches;
- static Item *curr, *prev, *next, *sel;
- static Window root, win;
-
- static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
- static char *(*fstrstr)(const char *, const char *) = strstr;
- static void (*calcoffsets)(void) = calcoffsetsh;
-
- void
- appenditem(Item *item, Item **list, Item **last) {
- if(!*last)
- *list = item;
- else
- (*last)->right = item;
- item->left = *last;
- item->right = NULL;
- *last = item;
- }
-
- void
- calcoffsetsh(void) {
- unsigned int w, x;
-
- w = promptw + inputw + textw(dc, "<") + textw(dc, ">");
- for(x = w, next = curr; next; next = next->right)
- if((x += MIN(textw(dc, next->text), mw / 3)) > mw)
- break;
- for(x = w, prev = curr; prev && prev->left; prev = prev->left)
- if((x += MIN(textw(dc, prev->left->text), mw / 3)) > mw)
- break;
- }
-
- void
- calcoffsetsv(void) {
- unsigned int i;
-
- next = prev = curr;
- for(i = 0; i < lines && next; i++)
- next = next->right;
- for(i = 0; i < lines && prev && prev->left; i++)
- prev = prev->left;
- }
-
- char *
- cistrstr(const char *s, const char *sub) {
- size_t len;
-
- for(len = strlen(sub); *s; s++)
- if(!strncasecmp(s, sub, len))
- return (char *)s;
- return NULL;
- }
-
- void
- drawmenu(void) {
- dc->x = 0;
- dc->y = 0;
- drawrect(dc, 0, 0, mw, mh, BG(dc, normcol));
- dc->h = dc->font.height + 2;
- dc->y = topbar ? 0 : mh - dc->h;
- /* print prompt? */
- if(prompt) {
- dc->w = promptw;
- drawtext(dc, prompt, selcol);
- dc->x = dc->w;
- }
- dc->w = mw - dc->x;
- /* print input area */
- if(matches && lines == 0 && textw(dc, text) <= inputw)
- dc->w = inputw;
- drawtext(dc, text, normcol);
- drawrect(dc, textnw(dc, text, cursor) + dc->h/2 - 2, 2, 1, dc->h - 4, FG(dc, normcol));
- if(lines > 0)
- drawmenuv();
- else if(curr && (dc->w == inputw || curr->next))
- drawmenuh();
- commitdraw(dc, win);
- }
-
- void
- drawmenuh(void) {
- Item *item;
-
- dc->x += inputw;
- dc->w = textw(dc, "<");
- if(curr->left)
- drawtext(dc, "<", normcol);
- for(item = curr; item != next; item = item->right) {
- dc->x += dc->w;
- dc->w = MIN(textw(dc, item->text), mw / 3);
- drawtext(dc, item->text, (item == sel) ? selcol : normcol);
- }
- dc->w = textw(dc, ">");
- dc->x = mw - dc->w;
- if(next)
- drawtext(dc, ">", normcol);
- }
-
- void
- drawmenuv(void) {
- Item *item;
-
- dc->y = topbar ? dc->h : 0;
- dc->w = mw - dc->x;
- for(item = curr; item != next; item = item->right) {
- drawtext(dc, item->text, (item == sel) ? selcol : normcol);
- dc->y += dc->h;
- }
- }
-
- void
- grabkeyboard(void) {
- int i;
-
- for(i = 0; i < 1000; i++) {
- if(!XGrabKeyboard(dc->dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime))
- return;
- usleep(1000);
- }
- eprintf("cannot grab keyboard\n");
- }
-
- void
- insert(const char *s, ssize_t n) {
- memmove(text + cursor + n, text + cursor, sizeof text - cursor - n);
- if(n > 0)
- memcpy(text + cursor, s, n);
- cursor += n;
- match();
- }
-
- void
- keypress(XKeyEvent *e) {
- char buf[sizeof text];
- int n;
- size_t len;
- KeySym ksym;
-
- len = strlen(text);
- XLookupString(e, buf, sizeof buf, &ksym, NULL);
- if(e->state & ControlMask) {
- switch(tolower(ksym)) {
- default:
- return;
- case XK_a:
- ksym = XK_Home;
- break;
- case XK_b:
- ksym = XK_Left;
- break;
- case XK_c:
- ksym = XK_Escape;
- break;
- case XK_e:
- ksym = XK_End;
- break;
- case XK_f:
- ksym = XK_Right;
- break;
- case XK_h:
- ksym = XK_BackSpace;
- break;
- case XK_i:
- ksym = XK_Tab;
- break;
- case XK_j:
- case XK_m:
- ksym = XK_Return;
- break;
- case XK_k: /* delete right */
- text[cursor] = '\0';
- match();
- break;
- case XK_n:
- ksym = XK_Down;
- break;
- case XK_p:
- ksym = XK_Up;
- break;
- case XK_u: /* delete left */
- insert(NULL, -cursor);
- break;
- case XK_w: /* delete word */
- if(cursor == 0)
- return;
- n = 0;
- while(cursor - n++ > 0 && text[cursor - n] == ' ');
- while(cursor - n++ > 0 && text[cursor - n] != ' ');
- insert(NULL, 1-n);
- break;
- case XK_y: /* paste selection */
- XConvertSelection(dc->dpy, XA_PRIMARY, utf8, None, win, CurrentTime);
- /* causes SelectionNotify event */
- return;
- }
- }
- switch(ksym) {
- default:
- if(!iscntrl((int)*buf))
- insert(buf, MIN(strlen(buf), sizeof text - cursor));
- break;
- case XK_BackSpace:
- if(cursor == 0)
- return;
- for(n = 1; cursor - n > 0 && !UTF8_CODEPOINT(text[cursor - n]); n++);
- insert(NULL, -n);
- break;
- case XK_Delete:
- if(cursor == len)
- return;
- for(n = 1; cursor + n < len && !UTF8_CODEPOINT(text[cursor + n]); n++);
- cursor += n;
- insert(NULL, -n);
- break;
- case XK_End:
- if(cursor < len) {
- cursor = len;
- break;
- }
- while(next) {
- sel = curr = next;
- calcoffsets();
- }
- while(sel && sel->right)
- sel = sel->right;
- break;
- case XK_Escape:
- exit(EXIT_FAILURE);
- case XK_Home:
- if(sel == matches) {
- cursor = 0;
- break;
- }
- sel = curr = matches;
- calcoffsets();
- break;
- case XK_Left:
- if(cursor > 0 && (!sel || !sel->left || lines > 0)) {
- while(cursor-- > 0 && !UTF8_CODEPOINT(text[cursor]));
- break;
- }
- else if(lines > 0)
- return;
- case XK_Up:
- if(!sel || !sel->left)
- return;
- sel = sel->left;
- if(sel->right == curr) {
- curr = prev;
- calcoffsets();
- }
- break;
- case XK_Next:
- if(!next)
- return;
- sel = curr = next;
- calcoffsets();
- break;
- case XK_Prior:
- if(!prev)
- return;
- sel = curr = prev;
- calcoffsets();
- break;
- case XK_Return:
- case XK_KP_Enter:
- fputs((sel && !(e->state & ShiftMask)) ? sel->text : text, stdout);
- fflush(stdout);
- exit(EXIT_SUCCESS);
- case XK_Right:
- if(cursor < len) {
- while(cursor++ < len && !UTF8_CODEPOINT(text[cursor]));
- break;
- }
- else if(lines > 0)
- return;
- case XK_Down:
- if(!sel || !sel->right)
- return;
- sel = sel->right;
- if(sel == next) {
- curr = next;
- calcoffsets();
- }
- break;
- case XK_Tab:
- if(!sel)
- return;
- strncpy(text, sel->text, sizeof text);
- cursor = strlen(text);
- match();
- break;
- }
- drawmenu();
- }
-
- void
- match(void) {
- unsigned int len;
- Item *item, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
-
- len = strlen(text);
- matches = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
- for(item = allitems; item; item = item->next)
- if(!fstrncmp(text, item->text, len + 1))
- appenditem(item, &lexact, &exactend);
- else if(!fstrncmp(text, item->text, len))
- appenditem(item, &lprefix, &prefixend);
- else if(fstrstr(item->text, text))
- appenditem(item, &lsubstr, &substrend);
- if(lexact) {
- matches = lexact;
- itemend = exactend;
- }
- if(lprefix) {
- if(itemend) {
- itemend->right = lprefix;
- lprefix->left = itemend;
- }
- else
- matches = lprefix;
- itemend = prefixend;
- }
- if(lsubstr) {
- if(itemend) {
- itemend->right = lsubstr;
- lsubstr->left = itemend;
- }
- else
- matches = lsubstr;
- }
- curr = prev = next = sel = matches;
- calcoffsets();
- }
-
- void
- paste(void) {
- char *p, *q;
- int di;
- unsigned long dl;
- Atom da;
-
- XGetWindowProperty(dc->dpy, win, utf8, 0, sizeof text - cursor, True,
- utf8, &da, &di, &dl, &dl, (unsigned char **)&p);
- insert(p, (q = strchr(p, '\n')) ? q-p : strlen(p));
- XFree(p);
- drawmenu();
- }
-
- void
- readstdin(void) {
- char buf[sizeof text], *p;
- Item *item, *new;
-
- allitems = NULL;
- for(item = NULL; fgets(buf, sizeof buf, stdin); item = new) {
- if((p = strchr(buf, '\n')))
- *p = '\0';
- if(!(new = malloc(sizeof *new)))
- eprintf("cannot malloc %u bytes\n", sizeof *new);
- if(!(new->text = strdup(buf)))
- eprintf("cannot strdup %u bytes\n", strlen(buf));
- inputw = MAX(inputw, textw(dc, new->text));
- new->next = new->left = new->right = NULL;
- if(item)
- item->next = new;
- else
- allitems = new;
- }
- }
-
- void
- run(void) {
- XEvent ev;
-
- while(!XNextEvent(dc->dpy, &ev))
- switch(ev.type) {
- case Expose:
- if(ev.xexpose.count == 0)
- drawmenu();
- break;
- case KeyPress:
- keypress(&ev.xkey);
- break;
- case SelectionNotify:
- if(ev.xselection.property == utf8)
- paste();
- break;
- case VisibilityNotify:
- if(ev.xvisibility.state != VisibilityUnobscured)
- XRaiseWindow(dc->dpy, win);
- break;
- }
- }
-
- void
- setup(void) {
- int x, y, screen;
- XSetWindowAttributes wa;
- #ifdef XINERAMA
- int n;
- XineramaScreenInfo *info;
- #endif
-
- screen = DefaultScreen(dc->dpy);
- root = RootWindow(dc->dpy, screen);
- utf8 = XInternAtom(dc->dpy, "UTF8_STRING", False);
-
- normcol[ColBG] = getcolor(dc, normbgcolor);
- normcol[ColFG] = getcolor(dc, normfgcolor);
- selcol[ColBG] = getcolor(dc, selbgcolor);
- selcol[ColFG] = getcolor(dc, selfgcolor);
-
- /* input window geometry */
- mh = (dc->font.height + 2) * (lines + 1);
- #ifdef XINERAMA
- if((info = XineramaQueryScreens(dc->dpy, &n))) {
- int i, di;
- unsigned int du;
- Window dw;
-
- XQueryPointer(dc->dpy, root, &dw, &dw, &x, &y, &di, &di, &du);
- for(i = 0; i < n; i++)
- if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
- break;
- x = info[i].x_org;
- y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
- mw = info[i].width;
- XFree(info);
- }
- else
- #endif
- {
- x = 0;
- y = topbar ? 0 : DisplayHeight(dc->dpy, screen) - mh;
- mw = DisplayWidth(dc->dpy, screen);
- }
-
- /* input window */
- wa.override_redirect = True;
- wa.background_pixmap = ParentRelative;
- wa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
- win = XCreateWindow(dc->dpy, root, x, y, mw, mh, 0,
- DefaultDepth(dc->dpy, screen), CopyFromParent,
- DefaultVisual(dc->dpy, screen),
- CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
-
- grabkeyboard();
- setcanvas(dc, win, mw, mh);
- inputw = MIN(inputw, mw/3);
- promptw = prompt ? MIN(textw(dc, prompt), mw/5) : 0;
- XMapRaised(dc->dpy, win);
- text[0] = '\0';
- match();
- }
-
- void
- usage(void) {
- fputs("usage: dmenu [-b] [-i] [-l lines] [-p prompt] [-fn font] [-nb color]\n"
- " [-nf color] [-sb color] [-sf color] [-v]\n", stderr);
- exit(EXIT_FAILURE);
- }
-
- int
- main(int argc, char *argv[]) {
- int i;
-
- progname = "dmenu";
- dc = initdraw();
-
- for(i = 1; i < argc; i++)
- /* single flags */
- if(!strcmp(argv[i], "-v")) {
- fputs("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n", stdout);
- exit(EXIT_SUCCESS);
- }
- else if(!strcmp(argv[i], "-b"))
- topbar = False;
- else if(!strcmp(argv[i], "-i")) {
- fstrncmp = strncasecmp;
- fstrstr = cistrstr;
- }
- else if(i == argc-1)
- usage();
- /* double flags */
- else if(!strcmp(argv[i], "-l")) {
- if((lines = atoi(argv[++i])) > 0)
- calcoffsets = calcoffsetsv;
- }
- else if(!strcmp(argv[i], "-p"))
- prompt = argv[++i];
- else if(!strcmp(argv[i], "-fn"))
- initfont(dc, argv[i++]);
- else if(!strcmp(argv[i], "-nb"))
- normbgcolor = argv[++i];
- else if(!strcmp(argv[i], "-nf"))
- normfgcolor = argv[++i];
- else if(!strcmp(argv[i], "-sb"))
- selbgcolor = argv[++i];
- else if(!strcmp(argv[i], "-sf"))
- selfgcolor = argv[++i];
- else
- usage();
-
- readstdin();
- setup();
- run();
-
- return EXIT_FAILURE; /* should not reach */
- }
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